COMPLAINT regarding deduction/contribution

I know that the Boncap scheme are salary based, but my husband (who is the main member) received a confirmation SMS from his bank stating that Bonitas debited his account with R2823, where it should have been R1782 (according to his salary). We then phoned them to find out what is going on, but they just keep saying that they work on the highest income of the two, now this is where I do not understand:<br> How can they debit his account according to my salary, (my salary ISN'T being deposited in his bank account)???<br> We requested the written proof that they informed us that our monthly contribution will be exactly R2823, and they refuse to assist us with this written proof!!!<br> Also, if they are changing their ways of calculating the contributions, they should STATE clearly on all documentation that this is how they will be doing it. They should then adjust their wording to \COUPLE"and not \""Main Member\"" and \""Adult Dependant\"" anymore"